11. (a) Discuss about DDA algorithm and the Midpoint Line Algorithm.
Or
(b) With an example, explain the Cohen-Sutherland Line-clipping algorithm.

12. (a) Discuss about the Homogeneous co-ordinates and Matrix Representation of 2D
Transformations.
Or
(b) Explain about solid body transformations. Also discuss about rotating an arbitrary point
and Reflection through an arbitrary line.